Webster Definition for "hash"

  1. hash \'hash\ vt [F hacher, fr. OF hachier, fr. hache battle-ax, of Gmc origin]; akin to OHG ha-ppa sickle; akin to Gk koptein to cut - more at CAPON 1a: to chop into small pieces 1b: CONFUSE, MUDDLE 2: to talk about : REVIEW

  2. hash n 1: chopped food; specif : chopped meat mixed with potatoes and browned 2: a restatement of something that is already known 3: HODGEPODGE, JUMBLE

I'd say definition 2.3 is most appropriate, but actually 2.1 is the most accurate origin of the name for our group.